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<a class="jxr_linenumber" name="1" href="#1">1</a>   <em class="jxr_comment">/*</em>
<a class="jxr_linenumber" name="2" href="#2">2</a>   <em class="jxr_comment"> * Copyright 2014 The Netty Project</em>
<a class="jxr_linenumber" name="3" href="#3">3</a>   <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="4" href="#4">4</a>   <em class="jxr_comment"> * The Netty Project licenses this file to you under the Apache License,</em>
<a class="jxr_linenumber" name="5" href="#5">5</a>   <em class="jxr_comment"> * version 2.0 (the "License"); you may not use this file except in compliance</em>
<a class="jxr_linenumber" name="6" href="#6">6</a>   <em class="jxr_comment"> * with the License. You may obtain a copy of the License at:</em>
<a class="jxr_linenumber" name="7" href="#7">7</a>   <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="8" href="#8">8</a>   <em class="jxr_comment"> *   <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em>
<a class="jxr_linenumber" name="9" href="#9">9</a>   <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="10" href="#10">10</a>  <em class="jxr_comment"> * Unless required by applicable law or agreed to in writing, software</em>
<a class="jxr_linenumber" name="11" href="#11">11</a>  <em class="jxr_comment"> * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT</em>
<a class="jxr_linenumber" name="12" href="#12">12</a>  <em class="jxr_comment"> * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the</em>
<a class="jxr_linenumber" name="13" href="#13">13</a>  <em class="jxr_comment"> * License for the specific language governing permissions and limitations</em>
<a class="jxr_linenumber" name="14" href="#14">14</a>  <em class="jxr_comment"> * under the License.</em>
<a class="jxr_linenumber" name="15" href="#15">15</a>  <em class="jxr_comment"> */</em>
<a class="jxr_linenumber" name="16" href="#16">16</a>  
<a class="jxr_linenumber" name="17" href="#17">17</a>  <strong class="jxr_keyword">package</strong> org.jboss.netty.handler.ssl.util;
<a class="jxr_linenumber" name="18" href="#18">18</a>  
<a class="jxr_linenumber" name="19" href="#19">19</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.buffer.ChannelBuffers;
<a class="jxr_linenumber" name="20" href="#20">20</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.handler.codec.base64.Base64;
<a class="jxr_linenumber" name="21" href="#21">21</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.logging.InternalLogger;
<a class="jxr_linenumber" name="22" href="#22">22</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.logging.InternalLoggerFactory;
<a class="jxr_linenumber" name="23" href="#23">23</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.util.CharsetUtil;
<a class="jxr_linenumber" name="24" href="#24">24</a>  
<a class="jxr_linenumber" name="25" href="#25">25</a>  <strong class="jxr_keyword">import</strong> java.io.File;
<a class="jxr_linenumber" name="26" href="#26">26</a>  <strong class="jxr_keyword">import</strong> java.io.FileOutputStream;
<a class="jxr_linenumber" name="27" href="#27">27</a>  <strong class="jxr_keyword">import</strong> java.io.IOException;
<a class="jxr_linenumber" name="28" href="#28">28</a>  <strong class="jxr_keyword">import</strong> java.io.OutputStream;
<a class="jxr_linenumber" name="29" href="#29">29</a>  <strong class="jxr_keyword">import</strong> java.security.KeyPair;
<a class="jxr_linenumber" name="30" href="#30">30</a>  <strong class="jxr_keyword">import</strong> java.security.KeyPairGenerator;
<a class="jxr_linenumber" name="31" href="#31">31</a>  <strong class="jxr_keyword">import</strong> java.security.NoSuchAlgorithmException;
<a class="jxr_linenumber" name="32" href="#32">32</a>  <strong class="jxr_keyword">import</strong> java.security.PrivateKey;
<a class="jxr_linenumber" name="33" href="#33">33</a>  <strong class="jxr_keyword">import</strong> java.security.SecureRandom;
<a class="jxr_linenumber" name="34" href="#34">34</a>  <strong class="jxr_keyword">import</strong> java.security.cert.CertificateEncodingException;
<a class="jxr_linenumber" name="35" href="#35">35</a>  <strong class="jxr_keyword">import</strong> java.security.cert.CertificateException;
<a class="jxr_linenumber" name="36" href="#36">36</a>  <strong class="jxr_keyword">import</strong> java.security.cert.X509Certificate;
<a class="jxr_linenumber" name="37" href="#37">37</a>  <strong class="jxr_keyword">import</strong> java.util.Date;
<a class="jxr_linenumber" name="38" href="#38">38</a>  
<a class="jxr_linenumber" name="39" href="#39">39</a>  <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="40" href="#40">40</a>  <em class="jxr_javadoccomment"> * Generates a temporary self-signed certificate for testing purposes.</em>
<a class="jxr_linenumber" name="41" href="#41">41</a>  <em class="jxr_javadoccomment"> * &lt;p&gt;</em>
<a class="jxr_linenumber" name="42" href="#42">42</a>  <em class="jxr_javadoccomment"> * &lt;strong&gt;NOTE:&lt;/strong&gt;</em>
<a class="jxr_linenumber" name="43" href="#43">43</a>  <em class="jxr_javadoccomment"> * Never use the certificate and private key generated by this class in production.</em>
<a class="jxr_linenumber" name="44" href="#44">44</a>  <em class="jxr_javadoccomment"> * It is purely for testing purposes, and thus it is very insecure.</em>
<a class="jxr_linenumber" name="45" href="#45">45</a>  <em class="jxr_javadoccomment"> * It even uses an insecure pseudo-random generator for faster generation internally.</em>
<a class="jxr_linenumber" name="46" href="#46">46</a>  <em class="jxr_javadoccomment"> * &lt;/p&gt;&lt;p&gt;</em>
<a class="jxr_linenumber" name="47" href="#47">47</a>  <em class="jxr_javadoccomment"> * A X.509 certificate file and a RSA private key file are generated in a system's temporary directory using</em>
<a class="jxr_linenumber" name="48" href="#48">48</a>  <em class="jxr_javadoccomment"> * {@link File#createTempFile(String, String)}, and they are deleted when the JVM exits using</em>
<a class="jxr_linenumber" name="49" href="#49">49</a>  <em class="jxr_javadoccomment"> * {@link File#deleteOnExit()}.</em>
<a class="jxr_linenumber" name="50" href="#50">50</a>  <em class="jxr_javadoccomment"> * &lt;/p&gt;&lt;p&gt;</em>
<a class="jxr_linenumber" name="51" href="#51">51</a>  <em class="jxr_javadoccomment"> * At first, this method tries to use OpenJDK's X.509 implementation (the {@code sun.security.x509} package).</em>
<a class="jxr_linenumber" name="52" href="#52">52</a>  <em class="jxr_javadoccomment"> * If it fails, it tries to use &lt;a href="<a href="http://www.bouncycastle.org/" target="alexandria_uri">http://www.bouncycastle.org/</a>"&gt;Bouncy Castle&lt;/a&gt; as a fallback.</em>
<a class="jxr_linenumber" name="53" href="#53">53</a>  <em class="jxr_javadoccomment"> * &lt;/p&gt;</em>
<a class="jxr_linenumber" name="54" href="#54">54</a>  <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="55" href="#55">55</a>  <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../../org/jboss/netty/handler/ssl/util/SelfSignedCertificate.html">SelfSignedCertificate</a> {
<a class="jxr_linenumber" name="56" href="#56">56</a>  
<a class="jxr_linenumber" name="57" href="#57">57</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <a href="../../../../../../org/jboss/netty/logging/InternalLogger.html">InternalLogger</a> logger = InternalLoggerFactory.getInstance(SelfSignedCertificate.<strong class="jxr_keyword">class</strong>);
<a class="jxr_linenumber" name="58" href="#58">58</a>  
<a class="jxr_linenumber" name="59" href="#59">59</a>      <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Current time minus 1 year, just in case software clock goes back due to time synchronization */</em>
<a class="jxr_linenumber" name="60" href="#60">60</a>      <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> Date NOT_BEFORE = <strong class="jxr_keyword">new</strong> Date(System.currentTimeMillis() - 86400000L * 365);
<a class="jxr_linenumber" name="61" href="#61">61</a>      <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> The maximum possible value in X.509 specification: 9999-12-31 23:59:59 */</em>
<a class="jxr_linenumber" name="62" href="#62">62</a>      <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> Date NOT_AFTER = <strong class="jxr_keyword">new</strong> Date(253402300799000L);
<a class="jxr_linenumber" name="63" href="#63">63</a>  
<a class="jxr_linenumber" name="64" href="#64">64</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> File certificate;
<a class="jxr_linenumber" name="65" href="#65">65</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> File privateKey;
<a class="jxr_linenumber" name="66" href="#66">66</a>  
<a class="jxr_linenumber" name="67" href="#67">67</a>      <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="68" href="#68">68</a>  <em class="jxr_javadoccomment">     * Creates a new instance.</em>
<a class="jxr_linenumber" name="69" href="#69">69</a>  <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="70" href="#70">70</a>      <strong class="jxr_keyword">public</strong> <a href="../../../../../../org/jboss/netty/handler/ssl/util/SelfSignedCertificate.html">SelfSignedCertificate</a>() <strong class="jxr_keyword">throws</strong> CertificateException {
<a class="jxr_linenumber" name="71" href="#71">71</a>          <strong class="jxr_keyword">this</strong>(<span class="jxr_string">"example.com"</span>);
<a class="jxr_linenumber" name="72" href="#72">72</a>      }
<a class="jxr_linenumber" name="73" href="#73">73</a>  
<a class="jxr_linenumber" name="74" href="#74">74</a>      <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="75" href="#75">75</a>  <em class="jxr_javadoccomment">     * Creates a new instance.</em>
<a class="jxr_linenumber" name="76" href="#76">76</a>  <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="77" href="#77">77</a>  <em class="jxr_javadoccomment">     * @param fqdn a fully qualified domain name</em>
<a class="jxr_linenumber" name="78" href="#78">78</a>  <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="79" href="#79">79</a>      <strong class="jxr_keyword">public</strong> <a href="../../../../../../org/jboss/netty/handler/ssl/util/SelfSignedCertificate.html">SelfSignedCertificate</a>(String fqdn) <strong class="jxr_keyword">throws</strong> CertificateException {
<a class="jxr_linenumber" name="80" href="#80">80</a>          <em class="jxr_comment">// Bypass entrophy collection by using insecure random generator.</em>
<a class="jxr_linenumber" name="81" href="#81">81</a>          <em class="jxr_comment">// We just want to generate it without any delay because it's for testing purposes only.</em>
<a class="jxr_linenumber" name="82" href="#82">82</a>          <strong class="jxr_keyword">this</strong>(fqdn, ThreadLocalInsecureRandom.current(), 1024);
<a class="jxr_linenumber" name="83" href="#83">83</a>      }
<a class="jxr_linenumber" name="84" href="#84">84</a>  
<a class="jxr_linenumber" name="85" href="#85">85</a>      <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="86" href="#86">86</a>  <em class="jxr_javadoccomment">     * Creates a new instance.</em>
<a class="jxr_linenumber" name="87" href="#87">87</a>  <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="88" href="#88">88</a>  <em class="jxr_javadoccomment">     * @param fqdn a fully qualified domain name</em>
<a class="jxr_linenumber" name="89" href="#89">89</a>  <em class="jxr_javadoccomment">     * @param random the {@link SecureRandom} to use</em>
<a class="jxr_linenumber" name="90" href="#90">90</a>  <em class="jxr_javadoccomment">     * @param bits the number of bits of the generated private key</em>
<a class="jxr_linenumber" name="91" href="#91">91</a>  <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="92" href="#92">92</a>      <strong class="jxr_keyword">public</strong> <a href="../../../../../../org/jboss/netty/handler/ssl/util/SelfSignedCertificate.html">SelfSignedCertificate</a>(String fqdn, SecureRandom random, <strong class="jxr_keyword">int</strong> bits) <strong class="jxr_keyword">throws</strong> CertificateException {
<a class="jxr_linenumber" name="93" href="#93">93</a>          <em class="jxr_comment">// Generate an RSA key pair.</em>
<a class="jxr_linenumber" name="94" href="#94">94</a>          <strong class="jxr_keyword">final</strong> KeyPair keypair;
<a class="jxr_linenumber" name="95" href="#95">95</a>          <strong class="jxr_keyword">try</strong> {
<a class="jxr_linenumber" name="96" href="#96">96</a>              KeyPairGenerator keyGen = KeyPairGenerator.getInstance(<span class="jxr_string">"RSA"</span>);
<a class="jxr_linenumber" name="97" href="#97">97</a>              keyGen.initialize(bits, random);
<a class="jxr_linenumber" name="98" href="#98">98</a>              keypair = keyGen.generateKeyPair();
<a class="jxr_linenumber" name="99" href="#99">99</a>          } <strong class="jxr_keyword">catch</strong> (NoSuchAlgorithmException e) {
<a class="jxr_linenumber" name="100" href="#100">100</a>             <em class="jxr_comment">// Should not reach here because every Java implementation must have RSA key pair generator.</em>
<a class="jxr_linenumber" name="101" href="#101">101</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> Error(e);
<a class="jxr_linenumber" name="102" href="#102">102</a>         }
<a class="jxr_linenumber" name="103" href="#103">103</a> 
<a class="jxr_linenumber" name="104" href="#104">104</a>         String[] paths;
<a class="jxr_linenumber" name="105" href="#105">105</a>         <strong class="jxr_keyword">try</strong> {
<a class="jxr_linenumber" name="106" href="#106">106</a>             <em class="jxr_comment">// Try the OpenJDK's proprietary implementation.</em>
<a class="jxr_linenumber" name="107" href="#107">107</a>             paths = OpenJdkSelfSignedCertGenerator.generate(fqdn, keypair, random);
<a class="jxr_linenumber" name="108" href="#108">108</a>         } <strong class="jxr_keyword">catch</strong> (Throwable t) {
<a class="jxr_linenumber" name="109" href="#109">109</a>             logger.debug(<span class="jxr_string">"Failed to generate a self-signed X.509 certificate using sun.security.x509:"</span>, t);
<a class="jxr_linenumber" name="110" href="#110">110</a>             <strong class="jxr_keyword">try</strong> {
<a class="jxr_linenumber" name="111" href="#111">111</a>                 <em class="jxr_comment">// Try Bouncy Castle if the current JVM didn't have sun.security.x509.</em>
<a class="jxr_linenumber" name="112" href="#112">112</a>                 paths = BouncyCastleSelfSignedCertGenerator.generate(fqdn, keypair, random);
<a class="jxr_linenumber" name="113" href="#113">113</a>             } <strong class="jxr_keyword">catch</strong> (Throwable t2) {
<a class="jxr_linenumber" name="114" href="#114">114</a>                 logger.debug(<span class="jxr_string">"Failed to generate a self-signed X.509 certificate using Bouncy Castle:"</span>, t2);
<a class="jxr_linenumber" name="115" href="#115">115</a>                 <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> CertificateException(
<a class="jxr_linenumber" name="116" href="#116">116</a>                         <span class="jxr_string">"No provider succeeded to generate a self-signed certificate. "</span> +
<a class="jxr_linenumber" name="117" href="#117">117</a>                                 <span class="jxr_string">"See debug log for the root cause."</span>);
<a class="jxr_linenumber" name="118" href="#118">118</a>             }
<a class="jxr_linenumber" name="119" href="#119">119</a>         }
<a class="jxr_linenumber" name="120" href="#120">120</a> 
<a class="jxr_linenumber" name="121" href="#121">121</a>         certificate = <strong class="jxr_keyword">new</strong> File(paths[0]);
<a class="jxr_linenumber" name="122" href="#122">122</a>         privateKey = <strong class="jxr_keyword">new</strong> File(paths[1]);
<a class="jxr_linenumber" name="123" href="#123">123</a>     }
<a class="jxr_linenumber" name="124" href="#124">124</a> 
<a class="jxr_linenumber" name="125" href="#125">125</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="126" href="#126">126</a> <em class="jxr_javadoccomment">     * Returns the generated X.509 certificate file in PEM format.</em>
<a class="jxr_linenumber" name="127" href="#127">127</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="128" href="#128">128</a>     <strong class="jxr_keyword">public</strong> File certificate() {
<a class="jxr_linenumber" name="129" href="#129">129</a>         <strong class="jxr_keyword">return</strong> certificate;
<a class="jxr_linenumber" name="130" href="#130">130</a>     }
<a class="jxr_linenumber" name="131" href="#131">131</a> 
<a class="jxr_linenumber" name="132" href="#132">132</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="133" href="#133">133</a> <em class="jxr_javadoccomment">     * Returns the generated RSA private key file in PEM format.</em>
<a class="jxr_linenumber" name="134" href="#134">134</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="135" href="#135">135</a>     <strong class="jxr_keyword">public</strong> File privateKey() {
<a class="jxr_linenumber" name="136" href="#136">136</a>         <strong class="jxr_keyword">return</strong> privateKey;
<a class="jxr_linenumber" name="137" href="#137">137</a>     }
<a class="jxr_linenumber" name="138" href="#138">138</a> 
<a class="jxr_linenumber" name="139" href="#139">139</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="140" href="#140">140</a> <em class="jxr_javadoccomment">     * Deletes the generated X.509 certificate file and RSA private key file.</em>
<a class="jxr_linenumber" name="141" href="#141">141</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="142" href="#142">142</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> delete() {
<a class="jxr_linenumber" name="143" href="#143">143</a>         safeDelete(certificate);
<a class="jxr_linenumber" name="144" href="#144">144</a>         safeDelete(privateKey);
<a class="jxr_linenumber" name="145" href="#145">145</a>     }
<a class="jxr_linenumber" name="146" href="#146">146</a> 
<a class="jxr_linenumber" name="147" href="#147">147</a>     <strong class="jxr_keyword">static</strong> String[] newSelfSignedCertificate(
<a class="jxr_linenumber" name="148" href="#148">148</a>             String fqdn, PrivateKey key, X509Certificate cert) <strong class="jxr_keyword">throws</strong> IOException, CertificateEncodingException {
<a class="jxr_linenumber" name="149" href="#149">149</a> 
<a class="jxr_linenumber" name="150" href="#150">150</a>         <em class="jxr_comment">// Encode the private key into a file.</em>
<a class="jxr_linenumber" name="151" href="#151">151</a>         String keyText = <span class="jxr_string">"-----BEGIN PRIVATE KEY-----\n"</span> +
<a class="jxr_linenumber" name="152" href="#152">152</a>                 Base64.encode(ChannelBuffers.wrappedBuffer(key.getEncoded()), <strong class="jxr_keyword">true</strong>).toString(CharsetUtil.US_ASCII) +
<a class="jxr_linenumber" name="153" href="#153">153</a>                 <span class="jxr_string">"\n-----END PRIVATE KEY-----\n"</span>;
<a class="jxr_linenumber" name="154" href="#154">154</a> 
<a class="jxr_linenumber" name="155" href="#155">155</a>         File keyFile = File.createTempFile(<span class="jxr_string">"keyutil_"</span> + fqdn + '_', <span class="jxr_string">".key"</span>);
<a class="jxr_linenumber" name="156" href="#156">156</a>         keyFile.deleteOnExit();
<a class="jxr_linenumber" name="157" href="#157">157</a> 
<a class="jxr_linenumber" name="158" href="#158">158</a>         OutputStream keyOut = <strong class="jxr_keyword">new</strong> FileOutputStream(keyFile);
<a class="jxr_linenumber" name="159" href="#159">159</a>         <strong class="jxr_keyword">try</strong> {
<a class="jxr_linenumber" name="160" href="#160">160</a>             keyOut.write(keyText.getBytes(CharsetUtil.US_ASCII.name()));
<a class="jxr_linenumber" name="161" href="#161">161</a>             keyOut.close();
<a class="jxr_linenumber" name="162" href="#162">162</a>             keyOut = <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="163" href="#163">163</a>         } <strong class="jxr_keyword">finally</strong> {
<a class="jxr_linenumber" name="164" href="#164">164</a>             <strong class="jxr_keyword">if</strong> (keyOut != <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="165" href="#165">165</a>                 safeClose(keyFile, keyOut);
<a class="jxr_linenumber" name="166" href="#166">166</a>                 safeDelete(keyFile);
<a class="jxr_linenumber" name="167" href="#167">167</a>             }
<a class="jxr_linenumber" name="168" href="#168">168</a>         }
<a class="jxr_linenumber" name="169" href="#169">169</a> 
<a class="jxr_linenumber" name="170" href="#170">170</a>         <em class="jxr_comment">// Encode the certificate into a CRT file.</em>
<a class="jxr_linenumber" name="171" href="#171">171</a>         String certText = <span class="jxr_string">"-----BEGIN CERTIFICATE-----\n"</span> +
<a class="jxr_linenumber" name="172" href="#172">172</a>                 Base64.encode(ChannelBuffers.wrappedBuffer(cert.getEncoded()), <strong class="jxr_keyword">true</strong>).toString(CharsetUtil.US_ASCII) +
<a class="jxr_linenumber" name="173" href="#173">173</a>                 <span class="jxr_string">"\n-----END CERTIFICATE-----\n"</span>;
<a class="jxr_linenumber" name="174" href="#174">174</a> 
<a class="jxr_linenumber" name="175" href="#175">175</a>         File certFile = File.createTempFile(<span class="jxr_string">"keyutil_"</span> + fqdn + '_', <span class="jxr_string">".crt"</span>);
<a class="jxr_linenumber" name="176" href="#176">176</a>         certFile.deleteOnExit();
<a class="jxr_linenumber" name="177" href="#177">177</a> 
<a class="jxr_linenumber" name="178" href="#178">178</a>         OutputStream certOut = <strong class="jxr_keyword">new</strong> FileOutputStream(certFile);
<a class="jxr_linenumber" name="179" href="#179">179</a>         <strong class="jxr_keyword">try</strong> {
<a class="jxr_linenumber" name="180" href="#180">180</a>             certOut.write(certText.getBytes(CharsetUtil.US_ASCII.name()));
<a class="jxr_linenumber" name="181" href="#181">181</a>             certOut.close();
<a class="jxr_linenumber" name="182" href="#182">182</a>             certOut = <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="183" href="#183">183</a>         } <strong class="jxr_keyword">finally</strong> {
<a class="jxr_linenumber" name="184" href="#184">184</a>             <strong class="jxr_keyword">if</strong> (certOut != <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="185" href="#185">185</a>                 safeClose(certFile, certOut);
<a class="jxr_linenumber" name="186" href="#186">186</a>                 safeDelete(certFile);
<a class="jxr_linenumber" name="187" href="#187">187</a>                 safeDelete(keyFile);
<a class="jxr_linenumber" name="188" href="#188">188</a>             }
<a class="jxr_linenumber" name="189" href="#189">189</a>         }
<a class="jxr_linenumber" name="190" href="#190">190</a> 
<a class="jxr_linenumber" name="191" href="#191">191</a>         <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> String[] { certFile.getPath(), keyFile.getPath() };
<a class="jxr_linenumber" name="192" href="#192">192</a>     }
<a class="jxr_linenumber" name="193" href="#193">193</a> 
<a class="jxr_linenumber" name="194" href="#194">194</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> safeDelete(File certFile) {
<a class="jxr_linenumber" name="195" href="#195">195</a>         <strong class="jxr_keyword">if</strong> (!certFile.delete()) {
<a class="jxr_linenumber" name="196" href="#196">196</a>             logger.warn(<span class="jxr_string">"Failed to delete a file: "</span> + certFile);
<a class="jxr_linenumber" name="197" href="#197">197</a>         }
<a class="jxr_linenumber" name="198" href="#198">198</a>     }
<a class="jxr_linenumber" name="199" href="#199">199</a> 
<a class="jxr_linenumber" name="200" href="#200">200</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> safeClose(File keyFile, OutputStream keyOut) {
<a class="jxr_linenumber" name="201" href="#201">201</a>         <strong class="jxr_keyword">try</strong> {
<a class="jxr_linenumber" name="202" href="#202">202</a>             keyOut.close();
<a class="jxr_linenumber" name="203" href="#203">203</a>         } <strong class="jxr_keyword">catch</strong> (IOException e) {
<a class="jxr_linenumber" name="204" href="#204">204</a>             logger.warn(<span class="jxr_string">"Failed to close a file: "</span> + keyFile, e);
<a class="jxr_linenumber" name="205" href="#205">205</a>         }
<a class="jxr_linenumber" name="206" href="#206">206</a>     }
<a class="jxr_linenumber" name="207" href="#207">207</a> }
</pre>
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